Härkingen

Gunzgen is a municipality in the district of Olten in the canton of Solothurn in Switzerland.

Egerkingen is a municipality in the district of Gäu in the canton of Solothurn in Switzerland.

Egerkingen railway station (German: Bahnhof Egerkingen) is a railway station in the municipality of Egerkingen, in the Swiss canton of Solothurn. It is an intermediate stop on the standard gauge Jura Foot line of Swiss Federal Railways.

Neuendorf is a municipality in the district of Gäu in the canton of Solothurn in Switzerland.

Santelhöchi Pass is a mountain pass in the canton of Solothurn in Switzerland. It connects Egerkingen and Bärenwil. The pass is the shortest route from the Autobahn intersection at Egerkingen to Langenbruck, Waldenburg, Liestal, and Basel. The Jurahöhenweg trail crosses the pass road between Hauenstein und Roggen (in the municipality of Balsthal).

Hägendorf railway station (German: Bahnhof Hägendorf) is a railway station in the municipality of Hägendorf, in the Swiss canton of Solothurn. It is an intermediate stop on the standard gauge Jura Foot line of Swiss Federal Railways.

Kappel is a municipality in the district of Olten in the canton of Solothurn in Switzerland.

Hägendorf is a municipality in the district of Olten in the canton of Solothurn in Switzerland.

Fulenbach (High Alemannic: Fulebach) is a municipality in the district of Olten in the canton of Solothurn in Switzerland.

Belchenflue Pass (el. 1055 m.) is a mountain pass to use only by hikers in the Jura Mountains between the cantons of Basel-Country and Solothurn. Nearestby access by car is on the Chilchzimmersattel. Actually the pass does not have a distinct name. It is the signpost just nearby the dead-end hiking trail that has Belchenflue written on. The mountain is also called Bölchen by locals. The name came originally from Celtic from the sun god Belenus. The namegiving nearby peak (el. 1099 m.) was an important marker for the tribal calendar establishing the seasons. Along with the peak of the same name in Alsace (Alsatian Belchen) and Black Forest (Black Forest Belchen), it allowed the establishment of the winter and summer solstice.[1] As is the case with much of the Jura range, the cliffs are formed of hard oolithic limestone, which has been exposed as the softer stone above it has eroded. The pass forms the divide between the watershed of the Aare in the south and the Ergolz in the north. Both flow into the Rhine. To the east are the Challhöchi and Unterer Hauenstein passes.

Oberbuchsiten railway station (German: Bahnhof Oberbuchsiten) is a railway station in the municipality of Oberbuchsiten, in the Swiss canton of Solothurn. It is an intermediate stop on the standard gauge Jura Foot line of Swiss Federal Railways.

The Belchenflue is a mountain of the Jura, located on the border between the Swiss cantons of Basel-Landschaft and Solothurn, south of Eptingen. The nearby Belchenflue Pass links the two cantons. The mountain is also known as the Swiss Belchen (Schweizer Belchen) and is part of the so-called Belchen System, a group of mountains with the name "Belchen" that may have been part of a Celtic sun calendar.